package com.sort;

import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;

class Father {
    // 父类构造器
    public Father() {
        // 打印当前对象所属 Class的名字
        System.out.println(this.getClass().getName());
    }
}

class Son extends Father {
}

class Daughter extends Father {
}

public class test {
    public static void main(String[] args) {
        Son son = new Son();
        Daughter daughter = new Daughter();
        Map map = new HashMap();
        // LinkedList
    }
}